{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x768cb5911496476dd27003b293d23fc7b2924dfa124b87e2dca915bd984defad",
    "signature": "0x3ea30ea0701e1705cf2ee918a717e200e31dca926b153d3cba643cf499ea7b2547f193be3a9abbd7f4d7d19f080e8d1bba14789c962b557ceb30bd28894ce6711c",
    "signer": "0x2881CC161622bC647b88915D64A5354a85Bdd555",
    "userId": "64534769"
  }
}